F.P. Journe 1300.3

The F.P. Journe Caliber 1300.3 is the foundation of the Octa collection, representing a horological ideal of maximum precision and autonomy. This groundbreaking automatic movement features an off-center 22K 5N gold rotor with unidirectional winding via a self-locking ball bearing system. The movement achieves an exceptional 160-hour power reserve (effective 120+ hours for chronometric precision) despite its compact dimensions. The 1-meter-long mainspring, only 1mm thick, combined with the innovative winding system ensures that every wrist movement is maximally exploited. All base plates and bridges are manufactured in 18K rose gold, a signature of F.P. Journe's commitment to traditional craftsmanship. The caliber serves as the base for various Octa complications including the Lune, Divine, Quantième Perpétuel, and UTC.